3 ce (07h, b0), 4 serial interface mode register (08h) – NEC PD17062 User Manual
Page 76
76
µ
PD17062
9.3 CE (07H, b
0
)
CE is a flag for reading the CE pin level.
The flag indicates 1 when a high level signal is input to the CE pin, or 0 when a low level signal is input.
9.4 SERIAL INTERFACE MODE REGISTER (08H)
b
3
b
2
b
1
b
0
0
0
CE
07H
0
1
0
CE pin low level
CE pin high level
b
3
b
2
b
1
b
0
SIO0CH
SB
SIO0TX
08H
0
1
SIO0MS
0
1
0
1
0
1
Transmission/reception setting
Setting of serial interface clock direction
Setting of serial interface mode
Setting of serial interface channel
2-wire bus mode
CH0 serial I/O mode
CH1 serial I/O mode
: RX (reception) mode
: SI mode
: P0A
3
used as a general-purpose port
2-wire bus mode
CH0 serial I/O mode
CH1 serial I/O mode
: TX (transmission) mode
: SO mode
: P0A
3
used as an SO pin
2-wire bus mode
Serial I/O mode
: Slave operation
: External clock operation
2-wire bus mode
Serial I/O mode
: Master operation
: Internal clock operation
Serial I/O mode
2-wire bus mode
Selects CH0
Selects CH1